A source familiar with why Allvin is retiring characterized it as a decision between Allvin and Meink.

The United States' Air Force chief announced on Monday that he planned to retire in the coming months, but did not provide a reason.

“More than anything, I’m proud to have been part of the team of airmen who live out our core values of integrity, service and excellence every day as we prepare to defend this great nation,” Allvin s...